80564040 divided by 12 
We want to divide 80564040 by 12.

Moving on to step 1:
12 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 12

Going ahead to step 2:
12 goes into 80 6 times with a remainder of 8.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 72 from 80, we get 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 12

Advancing to step 3:
85 divided by 12 is 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 67.0
Subtract 84 from 85 to get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 12

Moving on to step 4:
16 divided by 12 is 1 with a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 671.0
The remainder is 4 after subtracting 12 from 16.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 12

Step 5:
If we divide 44 by 12, we get 3 and a remainder of 8.
Record the quotient 3 as the next digit in the result. 
Result so far: 6713.0
Deduct 36 from 44 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 12

Going ahead to step 6:
If we divide 80 by 12, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 67136.0
If we subtract 72 from 80, we get 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 12

Moving on to step 7:
12 can be fit into 84 7 times, resulting in a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 671367.0
If we subtract 84 from 84, we get 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 12

Let's proceed to step 8:
0 divided by 12 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 6713670.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 6713670.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
If we divide 0 by 12, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 6713670.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 6713670.0 with a remaining 0.0.